Hollie,Thank you. Yes, I need a revision, but I need to find out why it failed in the first place before putting the next knee in. I have gone to two experts outside the geographical area of my surgeon, and neither one found any fault with the job of my surgeon. So, the options are- the metal, the poly, the cement, the design of the platform, infection(none found to date). There is likely osteolysis(sp?).thanks